源 昭忠 青一鋼 相出刃 165mm 朴 (口輪：水牛)柄

This is a Japanese kitchen knife made by a workshop that preserves traditional blade-making techniques since 1872. It features a single-edged design with a hardness of HRC 63-64 and is made of青一鋼, which can rust easily.

• The description claims that the knife should not be used on frozen food or bones to avoid blade chipping.